51103 NSK 17x30x9 Thrust Ball Bearing

Product Overview

The 51103 NSK is a single-direction thrust ball bearing designed to support axial loads while maintaining stable, low-friction rotation. With dimensions 17x30x9 mm, it is suitable for compact assemblies where reliable axial load transfer and precise shaft support are required.

Industrial Applications

This thrust bearing is commonly used in:
• Industrial gearboxes and mechanical drives
• Pumps, compressors, and motor assemblies
• Automation and production machinery
• Rotary tables, clutches and actuator mechanisms
It ensures consistent load handling in continuous operation environments.

Key Advantages

• Designed for axial loads in one direction
• Smooth, low-noise operation
• High durability and long service life
• Precision-machined components for stable load distribution
• Trusted NSK manufacturing quality

Main Description

The 51103 NSK thrust ball bearing is engineered for applications requiring reliable axial load support in a compact form. Its construction consists of a shaft washer, housing washer and a ball-cage assembly, allowing smooth rotation with minimal friction. This bearing is intended for axial loads only; it does not support radial forces, making it a specialized solution for machinery where the primary load direction is along the shaft axis.

Thanks to precision grinding and controlled tolerances, the bearing maintains stable motion even under continuous load conditions. NSK’s material quality and manufacturing standards contribute to its resistance to wear, reduced noise level during operation and long service life. The 51103 model is commonly used in machine tool mechanisms, gear systems, industrial pumps, compressors, and automated production equipment where predictable axial support is essential.

Its standardized dimensions (17 mm bore, 30 mm outer diameter, 9 mm width) enable straightforward installation or replacement in existing mechanical assemblies. The bearing performs effectively in systems that rely on efficiency, long duty cycles and consistent mechanical alignment.

FAQ

Does the 51103 NSK handle radial loads?
No. It is designed exclusively for axial loads in one direction.

Is it suitable for continuous industrial operation?
Yes, it is engineered for long-term, stable performance under sustained axial load.

Does it require lubrication?
Lubrication is recommended according to operating conditions and maintenance schedule.

Where is this bearing most commonly used?
In gearboxes, pumps, actuators, clutches and machinery requiring axial shaft support.